Low Voltage Current Mode Realization of Digital Logic Gates Using CMOSIn this paper, a new technique is introduced to implement the basic logic function using analog current mode. techniques. By expanding the logic function into the expression of integer series and using an adder and a subtractor, the realization of the basic logic function is simplified. To illustrate the proposed technique, we consider a CMOS circuit for the simultaneous realization of the NOT, AND, OR, NAND and XOR logic functions. PSPICE simulation results, obtained with a ±2 V supply, are included. Keyword: current mirror; CMOS analog multiplier; Current mode; Translinear principle; Digital logic circuits; INTRODUCTION Current mode implementation of logic gates is a very important element for current mode analog signal processing system. Mixed analog/digital electronic circuits are becoming more and more important. Digital electronic circuits are mainly designed in CMOS technology. To be able to integrate the digital and analog parts on a single chip, high-performance analog CMOS circuits are necessary (Ismail and Fiez, 1994) and a large number of mixed analog/digital VLSI integrated circuits produced under the best conditions. Digital CMOS technologies are now available (Laker and Sansen, 1994). In fact, the emergence of integrated circuits integrating mixed analog and digital functions on a single chip has led to an advanced level of analog design (Toumazou et al., 1990). Of particular interest here is the current-mode approach to analog integrated circuit design. It is well known that current-mode analog signal processing offers significant speed advantages over traditional voltage-mode signal processing (Allen, 1990). Currently, current mode implementations are available for a wide range of analog voters...... middle of paper ......onicsLetters, 19, 349-350.Kemp, AJ (1984) . Evaluation of translinear logic. Electronics Letters, 20, 413-414. Seevinck, E. (1978). Application of the translinear principle to digital circuits. IEEE Journal of Solid-State Circuits, SC-13, 528–530.MT Abuelma'atti, Low-voltage current-mode analog implementation of digital logic gates, active and passive electronic components, Vol. 26, 2003, pp.111-114 Khachab, N. and Ismail, M. (1991). Nonlinear CMOS analog cell for processing VLSI signal information. IEEE Journal of Semiconductor Circuits, 26, 1689-1699. Ali Naderi, Abdollah Khoei, Khayrollah Hadidi, Hadi Ghasemzadeh Int. J. Electron. Commun.(AEÜ) 63 (2009) 769–775.E. Seevinck and RJ Wiegerink, “Generalized Translinear Circuit Principle,” IEEE Journal of Solid-State Circuit, vol. 26, pp. 1098-1102, August 1991.

Essay / Low Voltage Current Mode Realization of Digital Logic Gates Using CMOSIn this paper, a new technique is introduced to implement the basic logic function using analog current mode. techniques. By expanding the logic function into the expression of integer series and using an adder and a subtractor, the realization of the basic logic function is simplified. To illustrate the proposed technique, we consider a CMOS circuit for the simultaneous realization of the NOT, AND, OR, NAND and XOR logic functions. PSPICE simulation results, obtained with a ±2 V supply, are included. Keyword: current mirror; CMOS analog multiplier; Current mode; Translinear principle; Digital logic circuits; INTRODUCTION Current mode implementation of logic gates is a very important element for current mode analog signal processing system. Mixed analog/digital electronic circuits are becoming more and more important. Digital electronic circuits are mainly designed in CMOS technology. To be able to integrate the digital and analog parts on a single chip, high-performance analog CMOS circuits are necessary (Ismail and Fiez, 1994) and a large number of mixed analog/digital VLSI integrated circuits produced under the best conditions. Digital CMOS technologies are now available (Laker and Sansen, 1994). In fact, the emergence of integrated circuits integrating mixed analog and digital functions on a single chip has led to an advanced level of analog design (Toumazou et al., 1990). Of particular interest here is the current-mode approach to analog integrated circuit design. It is well known that current-mode analog signal processing offers significant speed advantages over traditional voltage-mode signal processing (Allen, 1990). Currently, current mode implementations are available for a wide range of analog voters...... middle of paper ......onicsLetters, 19, 349-350.Kemp, AJ (1984) . Evaluation of translinear logic. Electronics Letters, 20, 413-414. Seevinck, E. (1978). Application of the translinear principle to digital circuits. IEEE Journal of Solid-State Circuits, SC-13, 528–530.MT Abuelma'atti, Low-voltage current-mode analog implementation of digital logic gates, active and passive electronic components, Vol. 26, 2003, pp.111-114 Khachab, N. and Ismail, M. (1991). Nonlinear CMOS analog cell for processing VLSI signal information. IEEE Journal of Semiconductor Circuits, 26, 1689-1699. Ali Naderi, Abdollah Khoei, Khayrollah Hadidi, Hadi Ghasemzadeh Int. J. Electron. Commun.(AEÜ) 63 (2009) 769–775.E. Seevinck and RJ Wiegerink, “Generalized Translinear Circuit Principle,” IEEE Journal of Solid-State Circuit, vol. 26, pp. 1098-1102, August 1991.

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